Cutting Into Asbestos Siding

Cut for asbestos fabrics was calculated as grain weight of 100 yards of a single yarn 7000 grains.

Cutting into asbestos siding.

Saw through a cut line in asbestos cement pipe with a hacksaw fitted with a coarse blade. Scraping or brushing off old paint from asbestos siding is necessary before repainting but dangerous because it can release small asbestos fibres. For details see asbestos textiles. Astm d577 52 provided methods for testing asbestos cloth for heat resistance.

Astm d677 50 pertained to woven asbestos cloth. There is no legal requirement to do so nor is there significant real estate benefit. Things you ll need straightedge utility knife thick plank c clamps dolphin nosed tin snips carpenter s rasp bench grinder 1 inch diameter steel pipe vise punch hammer hand drill sharp drill bit hacksaw fitted with a coarse blade. Asbestos is only dangerous when cut sawn or broken into small enough pieces so that asbestos fibers are sent into the air.

The approach of removing the old shingles and replacing them with new siding is an option that many homeowners have pursued though probably not as safely as they should. Cut a 45 degree bevel onto the edge joint of asbestos cement siding with a large carpenter s rasp. If asbestos remains intact in siding insulation popcorn ceilings or other materials it poses no risk and is not dangerous. Cutting sanding or breaking asbestos cement tiles poses a distinct health hazard.

Use slow deliberate strokes with the saw under water trickling from a hose pipe or a water bottle with a small hole. Cement asbestos siding tiles do not need to be removed simply because they contain asbestos.